Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [everyday-chemistry]

Applications of chemistry to reagents, reactions and processes of everyday life. Use this tag for question on chemistry in an out-of-laboratory/class context. DO NOT use this tag merely because the question is about simple chemistry.

1
vote
0answers
4 views

Why chewing gum gets hardened after drinking water

Basic question, please don't say temperature change, because i've tried, and it never gets back to same elasticity! There must be some other chemistry at work. Even with luke warm water or room ...
0
votes
0answers
9 views

What type of acid (and how much) needed to generate Chlorine Dioxide gas when added to Sodium Chlorite (for odor removal)?

I have several lbs of Sodium Chlorite (flakes), which I would like to use to generate Chlorine Dioxide gas in order to remove odors from rooms, autos, boats, etc. There are commercial products sold ...
-1
votes
0answers
12 views

Draw the resonances structures of 4-methylumbelliferone [on hold]

please help me I don't need the structure between acid and basic only resonance structures
2
votes
0answers
216 views

Interaction between soy milk and coffee producing bubbles

I noticed when I poured my soy milk (which I shook as per the directions on the carton) into my coffee, a large number of very fine bubbles rose to the surface. What causes this? Is there a chemical ...
0
votes
1answer
704 views

Solvents adequate for dissolving overheated polyethylene terephthalate glycol-modified (PETG) residue?

I work in 3D printing. One of the materials we use is polyethylene terephthalate glycol-modified, or PETG. It is a pretty good material, both in strength and appearance. It is melted and pushed ...
-1
votes
0answers
54 views

Type of energy stored in links between two atoms [on hold]

What type of energy is stored between link of two atoms? 1] Thermal energy 2] Nuclear energy 3] Chemical energy 4] Potential energy
2
votes
1answer
2k views

Can fumes from using bleach seep through plastic packaging and glass jars

A bulging can leaked inside our kitchen cabinet. I googled how to handle it. I followed the instructions I found online. I mixed 1/4 bleach and 2 cups water. Applied it on all surfaces. Then applied ...
10
votes
4answers
8k views

Synthesis of hydrazine with bleach and ammonia

I am trying to make rocket fuel using hydrazine, hydrogen peroxide and home products. I want to put an action figure in orbit. Is there any way to synthesize hydrazine with bleach and ammonia, using $...
6
votes
2answers
2k views

Does the main washing effect of soap come from foam?

I am curious if the main cleaning effect of soap comes from its foam (or, maybe, it is just a by-product). Here are some points, that might clarify what I mean: Does foam sort of "carry" dirt and ...
-1
votes
0answers
21 views

Transparent gel-like liquid that hardens quickly when in contact with air [on hold]

Is there any gel-like liquid that is transparent (preferably the same density as glass) but hardens quickly when in contact with air? I need it for a thing. The gel should harden as quickly as ...
1
vote
1answer
68 views

Cows milk protein in lactose

Does anyone know if the casein/whey cows milk protein can be found within processed lactose? Some background: our 4-month-old baby was given teething granules. She was then presented with a rash, ...
-2
votes
2answers
81 views

Why is petrol also called octane? [closed]

Why do people commonly use octane as a synonym for petrol (gasoline)? Isn't petrol a mixture of hydrocarbon distillates--not a pure substance?
16
votes
5answers
34k views

Painting metal, does it matter if all rust is removed before?

In the context of automobile repair work, assume a metal surface has rust over it. Does it matter if all of the rust is removed before the metal surface is painted? If it does matter, then why? It ...
25
votes
2answers
6k views

Why does bleach feel slippery?

My high-school chemistry teacher taught us the mantra "bases are slippery-soapy-slimy!" This question and this answer in Quora say this is due to saponification - conversion of lipids from the top ...
0
votes
1answer
43 views

How do I create Colloidal Lithium? [closed]

Hi I would like to know how to Create colloidal Lithium. I am grateful for any help. Thank you a lot
3
votes
3answers
86 views

What defines a discharged battery?

In the case of an AA Alkaline battery, what actually happens inside the battery once it is fully discharged? What components of the battery change as we use it?
41
votes
2answers
33k views

Does oil break down condoms?

It seems that every website on sexual health advises against using oil-based lubricants with condoms. It is claimed that "oil breaks down latex". One source claimed that a latex condom completely ...
8
votes
2answers
763 views

Can I successfully use a humidifier to distribute caffeine to wake someone up without the usual morning drowsiness?

Would I have any success putting coffee in a humidifier? Or perhaps water mixed with caffeine powder? So I could wake up without a jolting alarm clock, feeling like I already had a cup of coffee? I ...
1
vote
0answers
34 views

Definition of ionisation energy

My lecturer has defined ionization energy or ionization potential of a species A as the molar internal energy change, ΔU, for the reaction: $\ce{A (g) -> A+ (g) + e-}$ at $\pu{0 K}$, with reactants ...
0
votes
0answers
25 views

Adding apple cider vinegar to a solid DIY deodorant

If I wanted to add a bit of apple cider vinegar to my oil based deodorant, to increase antimicrobial properties, would this cause me to need a preservative? My deodorant is not water based, so I don't ...
-3
votes
0answers
40 views

when water and alcohol are mixed, why don't the boiling points change? [closed]

when water and alcohol are mixed, why doesn't the boiling points change? The vapor pressure should increase so the atmospheric pressure will equal to the vapor pressure faster, how do alcohol and ...
3
votes
2answers
65 views

Scientific Reason for Salt Solution Gaining Volume

A little background to this question: my mom placed a glass with salt and enough water to just cover the salt in a room to "absorb negative energy" out of the room at her office. It obviously "worked"....
-3
votes
0answers
12 views

Using Hess's Law [closed]

Calculate ΔH for the reaction 2 Al (s) + 3 Cl2 (g) → 2 AlCl3 (s), given: a. 2 Al (s) + 6 HCl (aq) → 2 AlCl3 (aq) + 3 H2 (g) ΔH = -100.8. kJ b. HCl (g) → HCl (aq) ΔH = -69.7 kJ c. H2 (g) + Cl2 (g) → ...
0
votes
0answers
16 views

Effect of Concentration on Reaction Rate - Calculating Final Concentrations in Solution [closed]

Question asks: Determine the final concentration of IO₃⁻ used in the reaction. Show a complete sample calculation for the (8.0 mL Solution A + 2.0 mL H2O Equation: IO3− + 3HSO3− → I− + 3 HSO4− ...
-1
votes
1answer
60 views

Is it safe to boil carbonated water in a kettle? [closed]

Isn't it dangerous to boil carbonated water in a kettle? Whenever I boil water in my kettle, I close its lid. Does this close lid constitute 'under pressure' (and so danger) emboldened beneath? ...
0
votes
2answers
34 views

What happens when mixing elemental mercury with sodium hypochlorite solution [closed]

Say you spilled elemental mercury from a thermometer and used household bleach on it, what would be the reaction if any?
3
votes
1answer
634 views

Is there any replacement for ethyl mercaptan in LPG?

Ethanethiol, commonly known as ethyl mercaptan, is a colorless gas added to LPG in order to detect its leakage. Apart from ethyl mercaptan, is there any gas or liquid that may be used as a ...
7
votes
1answer
82 views

Sunglasses that darken in sunlight

I have seen several of my (rich) friends and teachers having glasses that are colorless indoors, but take up a darker shade when exposed to sunlight. Upon searching for the chemistry of this, I did ...
0
votes
1answer
299 views

What fraction of the vapour in electronic cigarettes is water?

Not a chemist but looking for an answer I can understand. Electronic cigarettes use propylene glycol and/or vegetable glycerin as a base liquid. This is heated and vaporized at a low temperature (my ...
2
votes
1answer
41 views

Does heat loosen “corrosive bonds” in iron compounds… permanently?

One [obvious] way to remove a seized nut is to heat it [thus enlarge it]... more than the bolt. But that's not the only way to use heat in this application. Apparently you can also let the stuff cool ...
1
vote
2answers
46 views

Materials used in cooktop heating element, and reason for black appearance

I have been interested in the structure of heating elements/coils used in cooktops. I am referring to something such as in the following picture: I have a cooktop at home with such elements, and at ...
2
votes
3answers
5k views

Why do sealed plastic bottles of pop collapse as the contents get old?

A number of bottles of pop (two varieties) in unopened plastic bottles have sat for a few years in a room-temperature environment. All of the bottles have now collapsed a certain amount (all to about ...
3
votes
2answers
320 views

Using a calcium metal anode in aqueous solution?

In school, I am doing an electrochemistry lab in which I need to create a galvanic cell battery with the highest voltage possible using two beakers, a salt bridge, and electrodes. To maximize the ...
1
vote
1answer
19 views

Hardened polyurethane remover

I've looked at the MSDS of a couple of products for removing hardened polyurethane (PU) foam. Both contained only ethanolamine as a dangerous substance, but only between 1-5%. So I'm guessing this ...
2
votes
1answer
26 views

What are we seeing in this AC salt-water copper-wire experiment?

There's a highly watched video on YouTube by "ElectroBoom" on the effects of passing AC (not DC) current through salt water. The water gets cloudy and at the end of the video we can see one of the ...
19
votes
4answers
56k views

Why is salt needed when using vinegar to clean pennies?

Let's say you have a solution that is vinegar and it has salt (NaCl) dissolved in it. Then you place old dull pennies in it. Then you look at it 5 minutes later and the pennies are clean and looking ...
2
votes
1answer
113 views

Can green vehicle antifreeze (Ethylene Glycol) be diluted in a glass container?

I picked up a container of undiluted green antifreeze, and oops, I don't have anything to mix it in! I do have a glass container though at the top of my recycling bin that is about a half gallon. I've ...
7
votes
3answers
604 views

How to dissolve a spider with household chemicals?

Somehow a spider got into the little window that shows the water level on my electric kettle. The kettle doesn't come apart very easily, and it looks like I can't get this part off without breaking it....
9
votes
1answer
2k views

Identifying a glass frosting chemical

I have purchased an "unknown" white coloured powder from the market which can frost glass objects. Here are some properties of this powder White in colour When mixed with HCL or water, it results in ...
0
votes
0answers
40 views

Why does copper jewelry & wire smell bad - even when I'm not wearing it?

I make jewelry by weaving a frame from copper wire for a gemstone, then making copper coils or spirals, etc for further decoration. Even 'on the roll', the copper wire smells bad - and the smell ...
3
votes
0answers
31 views

Aligning povidone-iodine molecules in order to look for optical polarization

In this answer I mention how early polarizing filters (e.g. sunglasses) were made by doping a polymer with iodine atoms and then stretching the film to orient the polymer molecules. Electrons donated ...
6
votes
1answer
77 views

Are electronic descalers a scam?

It seems there are some electronic kits sold around nowadays by major retailers (e.g., Home Depot and Amazon) claimed to remove built-up scale from water pipes. But, do they actually work? If so, ...
1
vote
2answers
123 views

What is the best way to calculate the mass percentage of Calcium Carbonate from water?

Where I live it's believed that local tap water is really bad for drinking because of the amount of limestone. As a science experiment for school I wanted to approximately calculate the percentage of ...
25
votes
5answers
15k views

Microwaving a glass of water, what happens?

Most of us here would already know the simplified idea behind microwaving food: Microwave radiation hits the water molecules present in food, which excites them and causes 'em to vibrate rapidly in ...
2
votes
2answers
608 views

SMILES for functional groups

Does a resource exist that has the SMILES formula of the generalized pattern that represents the group? For instance: I have the Aldehydes group, which has the pattern: ...
15
votes
1answer
1k views

How does WD-40 remove rust?

One of the often-touted uses of WD-40 is that it "dissolves rust". The official website states that WD-40 "breaks down the bonds between metal and rust". I can't understand how this would work, since ...
7
votes
2answers
156 views

Chemistry of Walter Mitty's negative developer/stop bath/fixer?

I asked a question here How can Walter Mitty examine the negatives of photos in the bright sunny day? Commonly known, there are three steps using chemical baths to bring out the images of negatives: ...
0
votes
0answers
63 views

Melting point in hydrocarbons

Checking out the molecular structure and the melting points of various hydrocarbons I concluded: 1)branching increases the melting point of a hydrocarbon molecule 2)symmetry increases the melting ...
-1
votes
0answers
17 views

How to deal with coordinate bonds while dealing with formal charges?

When we calculate the formal charge of an atom in a molecule we consider the non-bonding pair as 2 electrons and any covalent bond as 1 electron. Ok then what about dative bonds,how many electrons do ...
6
votes
1answer
4k views

When I place a straw in carbontated drink and blow, more gas bubbles rise to the surface?

When I place a straw in carbontated drink and blow (making bubbling noises), more gas bubbles rise to the surface. The gas bubbles which rise to the surface are from the carbon dioxide gas dissolved ...